Actually, all the big 3 conferences are in a similar situation come next year. The SEC will be the strongest still but the ACC and BIG10 both become a lot more competitive with probably 15-20 of the preseason top 25 coming from those conferences. Gone are the days of BIG 10 and ACC teams having cakewalk schedules. This will likely open up spots to non power3 schools to slide in like the Big12 which becomes the new pac-12 lol. It's gonna be really hard for more than two teams to come out of either of the SEC, ACC, BIG10 to come out with less than 2 losses. There will be some 3-4 loss teams in the playoffs and some teams from weaker conferences will slide in because of their easier schedules.
It will be really interesting how the pollsters adjust because the reality of how tough an SEC schedule is gonna come into clarity for a lot of these schools. Look at Iowa who made the championship game because the only team with a pulse they played last year was Penn State. Michigan only played OSU and Penn State regular season. OSU only played Michigan Penn State and ND. Penn State Played OSU, UM and Iowa. The rest of their schedules was a joke. Similar story for FSU (LSU and Duke). That will not be true going forward for those schools.
Also Knowing the playoffs are a thing is gonna change stakes for regular season games. Most teams check out once they get 1 or 2 losses. Because they know its over for a natty. Now every game matters even if you have 2-3 L's you're still in the hunt. 9 wins is the new 10 wins. Conference championship games become seeding games because chances are both participants in the Big 3 conf champs get in.